Alma Pöysti (born Alma Ilona Pöysti on March 16, 1981, in Helsinki) is a Swedish-speaking Finnish actress. Coming from an artistic family, she is the daughter of director Erik Pöysti and the granddaughter of actors Lasse Pöysti and Birgitta Ulfsson.

A 2007 graduate of the Theatre Academy of Helsinki, she began her career on stage at the Swedish Theatre in Helsinki and the Finnish National Theatre, while also performing in Sweden.